Home / 579,153.20-868,729.80-509,169.20

Finding the Fourth Proportional to 579,153.20, 868,729.80 and 509,169.20

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Solution

The fourth proportional to 579,153.20, 868,729.80 and 509,169.20 is: 763,753.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,153.20 : 868,729.80 = 509,169.20 : x
  2. Step 2: Convert to fraction form
    579,153.20/868,729.80 = 509,169.20/x
  3. Step 3: Cross multiply
    579,153.20x = 868,729.80 × 509,169.20
  4. Step 4: Simplify right side
    579,153.20x = 442,330,457,282.16
  5. Step 5: Solve for x
    x = 442,330,457,282.16/579,153.20
  6. Step 6: Final answer
    x = 763,753.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.